Issac newton discovered gravity

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Across
  1. 3. discovered gravity
  2. 4. amount of gravity
  3. 6. earth's force
  4. 7. gravity balanced
  5. 9. the world
Down
  1. 1. newton's law
  2. 2. motion in an object
  3. 5. revolve around the sun
  4. 6. stars, gas, and planets
  5. 8. amount of matter